<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404</title>
    <style>
        body{
            margin:  0;
            text-align: center;
        }
        .headline{
            background-color: black;
            height: 3px;
        }
        .main_404{
            display: inline-block;
            background-color: black;
            margin: 100px;
            color: white;
            height: 200px;
            font-size: 180px;
            padding: 20px 100px ;
        }
    </style>
</head>
<body>
    <div class="headline"></div>
    <div class="main_404">404</div>
</body>
</html>